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Nature Neuroscience 12, 10–11 (1 January 2009) | doi:10.1038/nn0109-10

Spikes are making waves in the visual cortex

Harvey A Swadlow & Jose-Manuel Alonso

In the primary visual cortex, neurons are connected with each other through local and long-range horizontal connections that can span several millimeters. Some of these cortical neurons also receive direct input from the thalamus.